FR49837E - Cryptographic device - Google Patents

Cryptographic device

Info

Publication number
FR49837E
FR49837E FR49837DA FR49837E FR 49837 E FR49837 E FR 49837E FR 49837D A FR49837D A FR 49837DA FR 49837 E FR49837 E FR 49837E
Authority
FR
France
Prior art keywords
cryptographic device
cryptographic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Other languages
French (fr)
Inventor
Gustave Garnier
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Application granted granted Critical
Publication of FR49837E publication Critical patent/FR49837E/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09C—CIPHERING OR DECIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY
    • G09C1/00—Apparatus or methods whereby a given sequence of signs, e.g. an intelligible text, is transformed into an unintelligible sequence of signs by transposing the signs or groups of signs or by replacing them by others according to a predetermined system
    • G09C1/04—Apparatus or methods whereby a given sequence of signs, e.g. an intelligible text, is transformed into an unintelligible sequence of signs by transposing the signs or groups of signs or by replacing them by others according to a predetermined system with sign carriers or indicators moved relative to one another to positions determined by a permutation code, or key, so as to indicate the appropriate corresponding clear or ciphered text

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
FR49837D 1938-04-01 1938-04-01 Cryptographic device Expired FR49837E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR49837T 1938-04-01

Publications (1)

Publication Number Publication Date
FR49837E true FR49837E (en) 1939-08-08

Family

ID=8684936

Family Applications (1)

Application Number Title Priority Date Filing Date
FR49837D Expired FR49837E (en) 1938-04-01 1938-04-01 Cryptographic device

Country Status (1)

Country Link
FR (1) FR49837E (en)

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